PARENT SESSION
Poster Session 3: Aquatic Ecology
Monday, August 8, 5:00 PM - 6:30 PM, Exhibit Hall 210 D, Level 2, Palais des congrès de Montréal

Assessment of surface water quality on two golf courses in Korea and Cd uptake by water lettuce.

Park, Jin-Sung^*,1, Chang, Yoon-Jung¹, Kim, Ok Kyung², Lee, In-Sook¹, ¹ Ewha Womans University, Seoul, Korea² Anyang University, Anyang, Kyunggi-do, Korea

ABSTRACT- This study was performed to produce data on the quality of surface water bodies on two golf course located in southern (P country club) and eastern (B country club) areas by seasonal direct measurement of several physical parameters and four heavy metal concentrations over the courses on their surrounding environment, and moreover to investigate whether the efficiency of water quality remediation by aquatic plants, water lettuce (Pistia stratiotes) in preventing movement of compounds; especially cadmium into surrounding area. The parameters determined were pH, DO, COD, Cl^-, akality, hardness and nitrogen compounds(NH3-N, NO2-N, NO3-N). Water pH and DO concentrations were within the alkaline ranges of 7.26 to 8.99, with in the relatively low ranges of 2.2 to 6.76 ppm. COD had ranges 0.5 to 5.80 ppm, except with 7.57 ppm in B country club. The range of alkality and hardness were 19 to 68 ppm and 16.1 to 63.6 ppm, respectively. Nitrogen as ammonium (NH3-N) were detected in all samples, NO2-N, NO3-N were detected in slightly low concentrations. In the case of heavy metal concentration in water, the highest observed Cd concentration was 22.44 ppm in B country club remarkably. And other metal concentrations were represented in weak level, comparing with Quebec guideline level. So, we tested the remediation of the Cd-contaminated water using aquatic plant, water lettuce. Pistia stratiotes L. exposed to 0.2 mg/L, 0.4 mg/L and 1 mg/L of Cd. The greater the initial concentration, the greater Cd bioaccumulation rates. Especially, at 1 mg/L of Cd, Cd uptake by the plant was greater within the first 2 days of the experiment. The increase of Cd concentration in plant tissues occurred 7 times more in roots than shoot. Since P. stratiotes grows abundantly in wetlands to almost the entire water condition, the ability to accumulate Cd shows that P. stratiotes will be requisite to obtain successful removal in field.

Key words: golf course, water lettus, water quality